/* -*- Mode: c; tab-width: 8; indent-tabs-mode: 1; c-basic-offset: 8; -*- */
/*
 * Copyright (c) 1993, 1994, 1995, 1996, 1997
 *	The Regents of the University of California.  All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. All advertising materials mentioning features or use of this software
 *    must display the following acknowledgement:
 *	This product includes software developed by the Computer Systems
 *	Engineering Group at Lawrence Berkeley Laboratory.
 * 4. Neither the name of the University nor of the Laboratory may be used
 *    to endorse or promote products derived from this software without
 *    specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 *
 * @(#) $Header: /tcpdump/master/libpcap/pcap/pcap.h,v 1.4.2.11 2008-10-06 15:38:39 gianluca Exp $ (LBL)
 */

#ifndef lib_pcap_pcap_h
#define lib_pcap_pcap_h

#if defined (WIN32)
    #include <pcap-stdinc.h>
#elif defined (MSDOS)
    #include <sys/types.h>
    #include <sys/socket.h> /* u_int, u_char etc. */
#else /* UN*X */
    #include <sys/types.h>
    #include <sys/time.h>
#endif /* WIN32/MSDOS/UN*X */

#ifndef PCAP_DONT_INCLUDE_PCAP_BPF_H
    #include <pcap/bpf.h>
#endif

#include <stdio.h>

#ifdef HAVE_REMOTE
// We have to define the SOCKET here, although it has been defined in sockutils.h
// This is to avoid the distribution of the 'sockutils.h' file around
// (for example in the WinPcap developer's pack)
    #ifndef SOCKET
        #ifdef WIN32
            #define SOCKET unsigned int
        #else
            #define SOCKET int
        #endif
    #endif
#endif

#ifdef __cplusplus
extern "C" {
#endif

#define PCAP_VERSION_MAJOR 2
#define PCAP_VERSION_MINOR 4

#define PCAP_ERRBUF_SIZE 256

/*
 * Compatibility for systems that have a bpf.h that
 * predates the bpf typedefs for 64-bit support.
 */
#if BPF_RELEASE - 0 < 199406
typedef int bpf_int32;
typedef u_int bpf_u_int32;
#endif

typedef struct pcap pcap_t;
typedef struct pcap_dumper pcap_dumper_t;
typedef struct pcap_if pcap_if_t;
typedef struct pcap_addr pcap_addr_t;

/*
 * The first record in the file contains saved values for some
 * of the flags used in the printout phases of tcpdump.
 * Many fields here are 32 bit ints so compilers won't insert unwanted
 * padding; these files need to be interchangeable across architectures.
 *
 * Do not change the layout of this structure, in any way (this includes
 * changes that only affect the length of fields in this structure).
 *
 * Also, do not change the interpretation of any of the members of this
 * structure, in any way (this includes using values other than
 * LINKTYPE_ values, as defined in "savefile.c", in the "linktype"
 * field).
 *
 * Instead:
 *
 *	introduce a new structure for the new format, if the layout
 *	of the structure changed;
 *
 *	send mail to "tcpdump-workers@lists.tcpdump.org", requesting
 *	a new magic number for your new capture file format, and, when
 *	you get the new magic number, put it in "savefile.c";
 *
 *	use that magic number for save files with the changed file
 *	header;
 *
 *	make the code in "savefile.c" capable of reading files with
 *	the old file header as well as files with the new file header
 *	(using the magic number to determine the header format).
 *
 * Then supply the changes as a patch at
 *
 *	http://sourceforge.net/projects/libpcap/
 *
 * so that future versions of libpcap and programs that use it (such as
 * tcpdump) will be able to read your new capture file format.
 */
struct pcap_file_header
{
    bpf_u_int32 magic;
    u_short version_major;
    u_short version_minor;
    bpf_int32 thiszone; /* gmt to local correction */
    bpf_u_int32 sigfigs;    /* accuracy of timestamps */
    bpf_u_int32 snaplen;    /* max length saved portion of each pkt */
    bpf_u_int32 linktype;   /* data link type (LINKTYPE_*) */
};

/*
 * Macros for the value returned by pcap_datalink_ext().
 *
 * If LT_FCS_LENGTH_PRESENT(x) is true, the LT_FCS_LENGTH(x) macro
 * gives the FCS length of packets in the capture.
 */
#define LT_FCS_LENGTH_PRESENT(x)    ((x) & 0x04000000)
#define LT_FCS_LENGTH(x)        (((x) & 0xF0000000) >> 28)
#define LT_FCS_DATALINK_EXT(x)      ((((x) & 0xF) << 28) | 0x04000000)

typedef enum
{
    PCAP_D_INOUT = 0,
    PCAP_D_IN,
    PCAP_D_OUT
} pcap_direction_t;

/*
 * Generic per-packet information, as supplied by libpcap.
 *
 * The time stamp can and should be a "struct timeval", regardless of
 * whether your system supports 32-bit tv_sec in "struct timeval",
 * 64-bit tv_sec in "struct timeval", or both if it supports both 32-bit
 * and 64-bit applications.  The on-disk format of savefiles uses 32-bit
 * tv_sec (and tv_usec); this structure is irrelevant to that.  32-bit
 * and 64-bit versions of libpcap, even if they're on the same platform,
 * should supply the appropriate version of "struct timeval", even if
 * that's not what the underlying packet capture mechanism supplies.
 */
struct pcap_pkthdr
{
    struct timeval ts;  /* time stamp */
    bpf_u_int32 caplen; /* length of portion present */
    bpf_u_int32 len;    /* length this packet (off wire) */
};

/*
 * As returned by the pcap_stats()
 */
struct pcap_stat
{
    u_int ps_recv;      /* number of packets received */
    u_int ps_drop;      /* number of packets dropped */
    u_int ps_ifdrop;    /* drops by interface XXX not yet supported */
    #ifdef HAVE_REMOTE
    u_int ps_capt;      /* number of packets that are received by the application; please get rid off the Win32 ifdef */
    u_int ps_sent;      /* number of packets sent by the server on the network */
    u_int ps_netdrop;   /* number of packets lost on the network */
    #endif /* HAVE_REMOTE */
};

#ifdef MSDOS
/*
 * As returned by the pcap_stats_ex()
 */
struct pcap_stat_ex
{
    u_long rx_packets;            /* total packets received       */
    u_long tx_packets;            /* total packets transmitted    */
    u_long rx_bytes;              /* total bytes received         */
    u_long tx_bytes;              /* total bytes transmitted      */
    u_long rx_errors;             /* bad packets received         */
    u_long tx_errors;             /* packet transmit problems     */
    u_long rx_dropped;            /* no space in Rx buffers       */
    u_long tx_dropped;            /* no space available for Tx    */
    u_long multicast;             /* multicast packets received   */
    u_long collisions;

    /* detailed rx_errors: */
    u_long rx_length_errors;
    u_long rx_over_errors;        /* receiver ring buff overflow  */
    u_long rx_crc_errors;         /* recv'd pkt with crc error    */
    u_long rx_frame_errors;       /* recv'd frame alignment error */
    u_long rx_fifo_errors;        /* recv'r fifo overrun          */
    u_long rx_missed_errors;      /* recv'r missed packet         */

    /* detailed tx_errors */
    u_long tx_aborted_errors;
    u_long tx_carrier_errors;
    u_long tx_fifo_errors;
    u_long tx_heartbeat_errors;
    u_long tx_window_errors;
};
#endif

/*
 * Item in a list of interfaces.
 */
struct pcap_if
{
    struct pcap_if* next;
    char* name;     /* name to hand to "pcap_open_live()" */
    char* description;  /* textual description of interface, or NULL */
    struct pcap_addr* addresses;
    bpf_u_int32 flags;  /* PCAP_IF_ interface flags */
};

#define PCAP_IF_LOOPBACK 0x00000001     /* interface is loopback */

/*
 * Representation of an interface address.
 */
struct pcap_addr
{
    struct pcap_addr* next;
    struct sockaddr* addr;      /* address */
    struct sockaddr* netmask;   /* netmask for that address */
    struct sockaddr* broadaddr; /* broadcast address for that address */
    struct sockaddr* dstaddr;   /* P2P destination address for that address */
};

typedef void (*pcap_handler)(u_char*, const struct pcap_pkthdr*,
                             const u_char*);

/*
 * Error codes for the pcap API.
 * These will all be negative, so you can check for the success or
 * failure of a call that returns these codes by checking for a
 * negative value.
 */
#define PCAP_ERROR -1           /* generic error code */
#define PCAP_ERROR_BREAK -2         /* loop terminated by pcap_breakloop */
#define PCAP_ERROR_NOT_ACTIVATED -3     /* the capture needs to be activated */
#define PCAP_ERROR_ACTIVATED -4         /* the operation can't be performed on already activated captures */
#define PCAP_ERROR_NO_SUCH_DEVICE -5    /* no such device exists */
#define PCAP_ERROR_RFMON_NOTSUP -6      /* this device doesn't support rfmon (monitor) mode */
#define PCAP_ERROR_NOT_RFMON -7         /* operation supported only in monitor mode */
#define PCAP_ERROR_PERM_DENIED -8       /* no permission to open the device */
#define PCAP_ERROR_IFACE_NOT_UP -9      /* interface isn't up */

/*
 * Warning codes for the pcap API.
 * These will all be positive and non-zero, so they won't look like
 * errors.
 */
#define PCAP_WARNING 1              /* generic warning code */
#define PCAP_WARNING_PROMISC_NOTSUP 2   /* this device doesn't support promiscuous mode */

char* __cdecl pcap_lookupdev(char*);
int __cdecl pcap_lookupnet(const char*, bpf_u_int32*, bpf_u_int32*, char*);

pcap_t* __cdecl pcap_create(const char*, char*);
int __cdecl pcap_set_snaplen(pcap_t*, int);
int __cdecl pcap_set_promisc(pcap_t*, int);
int __cdecl pcap_can_set_rfmon(pcap_t*);
int __cdecl pcap_set_rfmon(pcap_t*, int);
int __cdecl pcap_set_timeout(pcap_t*, int);
int __cdecl pcap_set_buffer_size(pcap_t*, int);
int __cdecl pcap_activate(pcap_t*);

pcap_t* __cdecl pcap_open_live(const char*, int, int, int, char*);
pcap_t* __cdecl pcap_open_dead(int, int);
pcap_t* __cdecl pcap_open_offline(const char*, char*);
#if defined (WIN32)
pcap_t* __cdecl pcap_hopen_offline(intptr_t, char*);
    #if !defined (LIBPCAP_EXPORTS)
        #define pcap_fopen_offline(f, b) \
    pcap_hopen_offline(_get_osfhandle(_fileno(f)), b)
    #else /*LIBPCAP_EXPORTS*/
static pcap_t * __cdecl pcap_fopen_offline(FILE*, char*);
    #endif
#else /*WIN32*/
pcap_t * __cdecl pcap_fopen_offline(FILE*, char*);
#endif /*WIN32*/

void __cdecl pcap_close(pcap_t*);
int __cdecl pcap_loop(pcap_t *, int, pcap_handler, u_char*);
int __cdecl pcap_dispatch(pcap_t *, int, pcap_handler, u_char*);
const u_char*
__cdecl pcap_next(pcap_t*, struct pcap_pkthdr*);
int __cdecl pcap_next_ex(pcap_t*, struct pcap_pkthdr**, const u_char**);
void __cdecl pcap_breakloop(pcap_t*);
int __cdecl pcap_stats(pcap_t*, struct pcap_stat*);
int __cdecl pcap_setfilter(pcap_t*, struct bpf_program*);
int __cdecl pcap_setdirection(pcap_t *, pcap_direction_t);
int __cdecl pcap_getnonblock(pcap_t*, char*);
int __cdecl pcap_setnonblock(pcap_t*, int, char*);
int __cdecl pcap_inject(pcap_t *, const void*, size_t);
int __cdecl pcap_sendpacket(pcap_t*, const u_char*, int);
const char* __cdecl pcap_statustostr(int);
const char* __cdecl pcap_strerror(int);
char* __cdecl pcap_geterr(pcap_t*);
void __cdecl pcap_perror(pcap_t*, char*);
int __cdecl pcap_compile(pcap_t *, struct bpf_program*, const char*, int,
                         bpf_u_int32);
int __cdecl pcap_compile_nopcap(int, int, struct bpf_program*,
                                const char*, int, bpf_u_int32);
void __cdecl pcap_freecode(struct bpf_program*);
int __cdecl pcap_offline_filter(struct bpf_program*, const struct pcap_pkthdr*, const u_char*);
int __cdecl pcap_datalink(pcap_t*);
int __cdecl pcap_datalink_ext(pcap_t*);
int __cdecl pcap_list_datalinks(pcap_t*, int**);
int __cdecl pcap_set_datalink(pcap_t*, int);
void __cdecl pcap_free_datalinks(int*);
int __cdecl pcap_datalink_name_to_val(const char*);
const char* __cdecl pcap_datalink_val_to_name(int);
const char* __cdecl pcap_datalink_val_to_description(int);
int __cdecl pcap_snapshot(pcap_t*);
int __cdecl pcap_is_swapped(pcap_t*);
int __cdecl pcap_major_version(pcap_t*);
int __cdecl pcap_minor_version(pcap_t*);

/* XXX */
FILE* __cdecl pcap_file(pcap_t*);
int __cdecl pcap_fileno(pcap_t*);

pcap_dumper_t* __cdecl pcap_dump_open(pcap_t*, const char*);
pcap_dumper_t* __cdecl pcap_dump_fopen(pcap_t*, FILE* fp);
FILE* __cdecl pcap_dump_file(pcap_dumper_t*);
long __cdecl pcap_dump_ftell(pcap_dumper_t*);
int __cdecl pcap_dump_flush(pcap_dumper_t*);
void __cdecl pcap_dump_close(pcap_dumper_t*);
void __cdecl pcap_dump(u_char*, const struct pcap_pkthdr*, const u_char*);

int __cdecl pcap_findalldevs(pcap_if_t**, char*);
void __cdecl pcap_freealldevs(pcap_if_t*);

const char* __cdecl pcap_lib_version(void);

/* XXX this guy lives in the bpf tree */
u_int bpf_filter(const struct bpf_insn*, const u_char *, u_int, u_int);
int bpf_validate(const struct bpf_insn* f, int len);
char * bpf_image(const struct bpf_insn*, int);
void bpf_dump(const struct bpf_program*, int);

#if defined (WIN32)

/*
 * Win32 definitions
 */

int __cdecl pcap_setbuff(pcap_t* p, int dim);
int __cdecl pcap_setmode(pcap_t* p, int mode);
int __cdecl pcap_setmintocopy(pcap_t* p, int size);

    #ifdef WPCAP
/* Include file with the wpcap-specific extensions */
        #include <Win32-Extensions.h>
    #endif /* WPCAP */

    #define MODE_CAPT 0
    #define MODE_STAT 1
    #define MODE_MON 2

#elif defined (MSDOS)

/*
 * MS-DOS definitions
 */

int pcap_stats_ex(pcap_t*, struct pcap_stat_ex*);
void pcap_set_wait(pcap_t * p, void (* yield)(void), int wait);
u_long pcap_mac_packets(void);

#else /* UN*X */

/*
 * UN*X definitions
 */

int pcap_get_selectable_fd(pcap_t*);

#endif /* WIN32/MSDOS/UN*X */

#ifdef HAVE_REMOTE
/* Includes most of the public stuff that is needed for the remote capture */
    #include <remote-ext.h>
#endif   /* HAVE_REMOTE */

#ifdef __cplusplus
}
#endif

#endif